This art installation pays homage to the famed stones of European lore.

A museum dedicated to the former country.

Backwards hour and minute hands and a timing mechanism that fluctuates with the temperature led to this clock tower's local nickname.

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

Lebanese castle built by one man, over a lifetime.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

There has been an astronomical clock on this spot since the 14th century.

An ancient monastery, a locked room, and a mysterious book heist.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

Saintly bones pressed into a wax effigy of a Catholic superstar.

How did a French journalist’s grave become the sexiest statue in the cemetery?

The historic Masonic Lodge in which the first-ever female Mason was initiated.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

The tomb of history's greatest potato promoter is surrounded by tubers.

This 18th-century sundial was designed to calculate the date of Easter each year.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Baroque celebration of the end of the Great Plague of Vienna.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.